Constant Spring Supports. 8. Note that The rod take out (RTO) can be specified to exceed the maximum. 1400 Pipe Shoe Solution for Vibration in Piping, Case Study: Engineered Support for Vibration problem, Piping Alignment and Pipe Strain Solutions, Customization Addendum for Spring Supports, Spring Support Sizing & Pipe Stress Analysis, Engineered Spring Supports – General Information, Variable Spring Supports vs. If the clearance is tight, temporarily force the table down by loosening the 2 travel stop nuts on top of the angles, then tightening the nuts below. Loosen the main nut, then retighten the lock nut. • WT – Maximum weight for the load range, Download PTP 200-U Constant Spring Support PDF. 9. Adjusting the load to a higher or lower load from the load specified on the nameplate using field load adjustment is approximate. Remove the travel stops. Engineered Spring Supports – General Information Fig. • M – Maximum height for the load range Backed with rich industry experience, we do design, engineering , manufacturing, testing of Constant Spring Hanger and Supports to our clients. Piping Technology & Products’ constant spring hanger, usually referred to as a constant, provides constant support force for pipes and equipment subjected to vertical movement due to thermal expansion at locations where maintaining a constant stress is critical. ORDERING: Specify figure number, layout, size, type, description, load, actual travel, total travel and direction of travel. We can quote directly from the stress analysis. • E – J-Rod position for up travel • RTO – Rod take out for down travel Fig. Fig. • WT – Maximum weight for the load rang, Download PTP 100-C Constant Spring Support PDF. There is no other constant spring hanger in the market that is truly optimized for space and weight considerations. Supports are supplied with hot-dip galvanized finish as standard. on the high side (the other load of 2,361 lb. PT&Ps’ constant support hangers are principally used to support pipes and equipment subjected to vertical movement due to thermal expansion at locations where the transfer of stress to other supports or equipment can be critical. Total Travel = 5 1/2” UP • TO – Take out for up travel Constant Spring & Hangers are used in critical pipelines and also at locations where it is necessary to avoid any transfer of force or stress. It can be furnished with single lug suspension or double lug suspension as shown above. Spring Supports sizing is determined by a Pipe Stress Model which assesses the thermal growth and associated stress on the piping, nozzles, etc. Using the turnbuckles, adjust the load indicator to the cold position. • E – J-Rod position for up travel Size Range: Anvil Model R constant support hangers are made in two basic designs, 80- V (vertical design) and 81-H (horizontal design). Attach the constant to the load rods using the turnbuckles provided. ORDERING: Specify figure number, size, type, load, actual travel, total travel and direction of travel. Figure PTP 100-A is a vertical constant suspended from a beam. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. If the clearance is bigger than 3/8″, shim or grout the constant or pipe attachment accordingly. Load adjustment of + / – … Secure the hanger to a structure capable of handling the operating load, at a point where the constant’s load coupling is directly over the desired point of attachment to the pipe in the operating position. If they are not in the center of their holes, use the turnbuckles to adjust the load so that the stops are in the center. Screw Threads are ISO-metric coarse pitch series (6mm pitch series above size M64). The cam is designed such that the distances from the main pivot changes to compensate for the variable resistance during compression of the coil. Quality inspection and machine tests are also applied for ensuring its robust construction and high … PTP 100 – F-Constant Spring 1. The travel stop pin must be moved to the center of its hole by adjusting the hanger load. For load and travel not in the tables, please call for dimensions. • D – J-Rod position for down travel • F – Maximum length for the load range This picture below shows the Nano-Constant featured in our launch which supported 765 lb. Download PTP 200-C Constant Spring Support PDF. The spring support basically employs a spring element, which can get compressed or stretch-out depending upon the thermal movement of pipe and the corresponding loads. Quality Pipe Supports (QPS) Ltd. If this is the case, to clear the depth of the supporting steel, the rod take out (RTO) can be specified to exceed the minimum. If the variation exceeds 25%, a constant support hanger should be used. • WT – Maximum weight for the load range, Download PTP 100-G Constant Spring Support PDF. Combined, the 80-V and 81-H constant supports are made in nine different frame sizes and 110 spring sizes to accommodate travels from 1 1⁄2" to 20" … Fig. Figure PTP 100-D is a vertical constant with a top attachment which is bolted directly to the bottom of the steel as shown above. • E – J Rod position for up travel Fig. formId: "387a2f0a-000b-4fec-ace9-674cd4cf472e" If required, hydro testing should be done at this time. The single rod suspension must be mounted flush to the bottom of the beam where the suspension rod is 1/4 inch thicker than J-Rod. Constant Spring Supports. The dimensions for the standard PT&P constants are listed in the following pages per load and travel. PHYSICAL DIMENSIONS OF CONSTANTS It is important to understand that this constant has axial movement subjected by the vertical movement and angle rotation (D – E). This is vertical for Figure 100, and horizontal for Figure 200. Every constant spring hanger is calibrated in the factory and set to the load specified on the name plate (Figure B). Constant Spring Supports © 2018 Piping Technology & Products, Inc. All Rights Reserved, Insulated Pipe Supports (Figures 4500-4800), Pipe Shields Insulated Pipe Supports (Cold & Hot Shoes), High Temperature Pipe Supports (Hot Shoes), Pipe Stress Analysis Case Study – Pump Discharge, Spring Support and Expansion Joint Audits, Emergency Custom Steel Structure and Support Design and Fabrication, Case Study: Fig. • D – J-Rod position for down travel Variable Supports are manufactured in five different Travel Series which allow up to ten inches of movement and twenty … The travel stop (painted red) should now slip out easily. With an appropriate choice of moment arms and spring properties, a resisting force can be provided that is nearly independent of position. Beyond the Pipe Stress analysis, we will need elevation, attachment type, and any space constraints. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. • F – Maximum length for the load range This spring hanger is used in accomodate the high thermal expansion in Pipeline due to high temperature and load during process or fluied transmission in pipelines. Methods of Protecting against Corrosion For a total travel of 9” on the top row of the constant load table with a load of 2,413 lb. increasing or decreasing the load by 10% does not affect the total travel. This concept utilizes the principle of a varying leverage about a main pivot… The hanger rod and loading arm of the constant should be unobstructed. Constant Spring Support Constants use a spring coil (or series of coils) to accommodate pipe movement from the initial (installed) condition to the final (operating) condition of the piping system. Spring Support Sizing & Pipe Stress Analysis, Why PT&P Spring Supports The key to selecting a constant support style would be the space available for that support above, below and around the piping (see below). is the low side) gives a constant size of 44 in the first column. White: installation (COLD) position SIZING CONSTANTS (Examples) 3. Piping Technology & Products’ constant spring hanger, usually referred to as a constant, provides constant support force for pipes and equipment subjected to vertical movement due to thermal expansion at locations where maintaining a constant stress is critical. In either case, the load must be adjusted so that the travel stop is easily removed. Attach the connecting rod to the turnbuckle with full thread engagement. The travel stop pin must be engaged before load adjustment is performed. EQUALBALANCE™ constant spring hangers are available in seven different types and a broad variety of sizes to accommodate a wide range of loads, movements and hanger arrangements. See note below on travel key removal. Constant Spring Units are designed to allow the supported pipe work to expand vertically upwards or downwards, whilst maintaining a constant supporting effort throughout the travel range. • M – Maximum height for the load range Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. This constant supports vertical movement subjected by the total travel and no axial or lateral movement from its load flange unless a slide plate is added. Using the turnbuckles, level the pair of channels connecting the two constants. The constants are suspended via J-Rods from a beam. Total Travel = Actual Travel + Over Travel. • TO – Take out for up travel Then loosen the lock nut at the end of the spring. Load variations resulting from this are limited through the stress analysis calculations, depending on the sensitivity of … View Constants Ordering Checklist, Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. • D – Load flange position for down travel Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. Fig. Anchorage Constant Spring Supports are designed to allow the supported pipework to expand vertically upwards or downwards, whilst maintaining a constant supporting effort throughout the travel range. Covered spring provides protection and good appearance. Fig. • E – J-Rod position for up travel The hanger load needs to be increased if the pin is in position A, or decreased if the pin is in position C. Once disengaged, the travel stop may be stored by hanging it from the constant. Thus, the total travel is 9” rounded to the upper 1/2”. Every constant spring hanger is calibrated in the factory and set to the load specified on the nameplate. Constant Hangers with Adjustable Travel Stop Keys: Removal of Travel Stop Key. Constant Spring Hangers are designed to support piping and equipment where large vertical movements are expected and where the load variability of a variable spring hanger would exceed 25% of the design load. • TO – Take out for up travel • D – J Rod position for down travel • RTO – Rod take out for down travel The Type G constant consists of two Type 100 constants connected by a beam, with the pipe being supported on the beam. If axial movement cannot be tolerated, then a Figure PTP 200-U horizontal upthrust constant would be appropriate for the application which only allows for vertical movement. This constant supports vertical movement subjected by the total travel and no axial or lateral movement from its load flange unless a slide plate is added. ORDERING: Specify figure number, size, type, load, actual travel, total travel, direction of travel, and C-C dimension. The next step would be to select a support type. • D – Minimum height • RTO – Rod take out for down travel Customers can avail these Constant Spring Supports in different sizes and specifications. The load ranges in the tables below are half the total load lifted by the assembly, with the pipe line seated in the center of the C-C dimension, where each constant carries half the total load. Travel 8″ – 14″ Constant Spring Hangers are also used where load variation over 6% is not permitted, even if the vertical movement is not large. Constant load takes place through its range by a perfect counter balance crank lever where load and spring movements through the pivot ensure the minimum kinetic variation. Fig. • D – Minimum for up travel The Variable Support is a spring loaded device used for the support of piping and equipment where normal vertical movement is anticipated. From this table under the same column the lug information is provided. Figure PTP 100-C is a vertical constant suspended from a beam. The base plate is bolted directly to the top of the steel or floor. Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. • L – See side view of PTP 100-D If not, refer to Figure 5. Given an actual travel of 7.10”, which is over 5”, the amount of over travel is 1.42”. • WT – Maximum weight for the load range. For all constant spring supports there is no difference in load and the supported load will … Below are sketches of one direction vertical travel: Below is a sketch of dual direction vertical travel: 1. PTP 200 – B-Constant Spring portalId: "88145", Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. PTP 100 – C-Constant Spring • F – Maximum length for the load range • WT – Maximum weight for the load range, Download PTP 100-B Constant Spring Support PDF. © 2018 Piping Technology & Products, Inc. All Rights Reserved, ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED, “Rod Take Out (RTO) is for up travel [subtract 6 inches for down travel ], “Rod Take Out (RTO) is for up travel [subtract 8 inches for down travel ], “Take Out (TO) is for down travel [add 4 inches for up travel ], “Take Out (TO) is for down travel [add 6 inches for up travel ], “Take Out (TO) is for down travel [add 8 inches for up travel ], “Take Out (TO) is for down travel [add 10 inches for up travel ], “Take Out (TO) is for down travel [add 12 inches for up travel ], “Take Out (TO) is for down travel [add 14 inches for up travel ], “Take Out (TO) is for up travel [add 4 inches for down travel], “Take Out (TO) is for up travel [add 6 inches for down travel], “Take Out (TO) is for up travel [add 8 inches for down travel], “Take Out (TO) is for up travel [add 10 inches for down travel], “Take Out (TO) is for up travel [add 12 inches for down travel], “Take Out (TO) is for up travel [add 14 inches for down travel], Insulated Pipe Supports (Figures 4500-4800), Pipe Shields Insulated Pipe Supports (Cold & Hot Shoes), High Temperature Pipe Supports (Hot Shoes), Pipe Stress Analysis Case Study – Pump Discharge, Spring Support and Expansion Joint Audits, Emergency Custom Steel Structure and Support Design and Fabrication, Case Study: Fig. Our Constant Spring supports are cold/preset to the load specified by our client’s in our factory. Travel 14-1/2″ – 20″, Customization Options If this is the case, to clear the depth of the supporting steel, the rod take out (RTO) can be specified to exceed the minimum. • E – J-Rod position for up travel Fig. Inspection and Maintenance of Supports In our first quote for an offshore application, we supported 7,000 lb. According to MSS-SP-58, the maximum recommended variation from the operating load for variable spring hangers is 25 %. Spring hangers and spring supports are used to balance slight vertical displacements in the pipe system. on the high side (the other load of 2,277 lb. Then loosen the lock nut at the end of the spring. LOAD ADJUSTMENT Figure PTP 200-C is a horizontal constant suspended from a beam. Download PTP 100-D Constant Spring Support PDF. PTP figure 100 type E (Layout-B) is a vertical constant with a base plate which is bolted directly to the top of the steel. Constant Spring Supports. • E – Load flange position for up travel The load adjustment capability consists of a load adjustment scale which is used to increase (Figure A) or decrease (Figure C) the load up to 10%. From the Figure 200 Type-C list of tables (see Page 81), the J-Rod and Lug Selection table for a load of 2,356 lb. It can be furnished either with single rod suspension or double rod suspension as shown above. • L – Maximum for the load range • D – J-Rod position for down travel PTP 200 – F-Constant Spring Important Notes: ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED. This avoids additional loadings at the component connections to the pipework. To decrease the cold setting be sure that the travel stoop pin is in place. If not, adjust with the turnbuckles. Once the load is transferred, the travel stop must be removed. The whole assembly moves through the total travel. For all constant spring supports there is no difference in load and the supported load will remain uniform throughout the deflection cycle. If hydro testing is required, this should be done now. MENU MENU Alibaba.com. If axial movement cannot be tolerated, then a PTP figure 100 type U (vertical upthrust constant) would be appropriate for the application. Constant Spring Hanger Supports are use when this variation exceeds 25%. The constant resistance to a load is achieved by combining a spring coil with a cam which rotates about a main pivot point. Download PTP 100-A Constant Spring Support PDF. Type G Constant Thus, a 2000-pound hanger can be adjusted for loads from 1800 to 2200 pounds. 1400 Pipe Shoe Solution for Vibration in Piping, Case Study: Engineered Support for Vibration problem, Piping Alignment and Pipe Strain Solutions. Constant Spring Supports, Constant Spring Supports Suppliers Directory - Find variety Constant Spring Supports Suppliers, Manufacturers, Companies from around the World at gas spring ,pocket spring ,spring mattress, Springs Download PTP 200-A Constant Spring Support PDF. PTP 100 – U-Constant Spring • WT – Maximum weight for the load range. English Sourcing Solutions Services & Membership Help & Community Ready to Ship Trade Shows Get … Spring coils are supplied plastic-coated as standard. Types of Constant Effort Supports. Actual Travel = 7.10” Given an actual travel of 3.35”, which is under 5”, the amount of over travel is 1”. Découvrez notre large sélection de constant spring support sur support d'étagère ,masque de support et poursuivez le shopping sur m.french.alibaba.com. Attach the base plate of the constant to the supporting structure by placing the constant in its installation location. Figure PTP 200-B is a horizontal constant suspended from a beam. It can be furnished with single lug suspension or double lug suspension as shown above. The MSS standard provides for a tolerance of 6% in the constant load through the travel range. 4. However, to provide for situations where the supported load is different from the calculated load, the constant spring hangers are equipped with load adjustment capability. For load and travel not in the tables, please call for dimensions. The design, using a compression spring, a lever, and a spring tension rod, creates a moment counterbalancing about the main pivot pin. ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED The simplified construction, together with the compression spring working in conjunction with a bell crank lever, achieves a mathematically perfect counter-balancing of spring and load moments about the main pivot point. View more details on how we can customize your constant spring support. In this system, the external load remains uniform while the moment around its fixed pivot point varies during displacement (due to changes in moment arm length). IntroductionBergen Pipe Supports' constant spring hanger incorporates a design that generates a constant supporting force throughout its total travel range. 1.0 TECHNICAL DESCRIPTION 1.1 DESIGN DETAILS The Constant Spring Support designed and manufactured by Carpenter & Paterson Ltd incorporates the latest design concepts, resulting in a constant support effort through the total travel of the unit. It is important to understand that this constant has vertical movement subjected by the total travel and an axial movement (E – D) due to the angle of rotation. Download PTP 200-E Constant Spring Support PDF. Constants use a spring coil (or series of coils) to accommodate pipe movement from the initial (installed) condition to the final (operating) condition of the piping system. Types that support piping from below would be types (F and U). PTP 100 – E-Constant Spring • D – Minimum for up travel PTP figure 100 type F (Layout-A) is a vertical constant designed to support piping from below using a Sway Strut. The Pipe Stress model determines how the piping can be designed to move and avoid placing under stress on the nozzles to equipment and the piping itself. PTP 100 – A-Constant Spring Types that support piping from above would be types (A, B, C, D, E, and G), as in the above examples. b) For actual travel of 5 inches and over, the over travel is 20% of the actual travel. Figure 4 shows the attachment for Types A – E. The designation Figure 100 and 200 refer to the orientation of the spring can. Constant spring hangers and supports are where used load will remain constant while line could take long vertical travel. * If drawings are unattainable or you don’t have access to the ISO drawings, we can perform Laser Scanning on the piping system and generate the drawings. 5. Constant load throughout the complete load and movement range. For load and travel not in the tables, PLEASE CALL FOR DIMENSIONS. • WT – Maximum weight for the load range, Download PTP 100-F Constant Spring Support PDF, Layout -A Shown | For Layout-B, scroll down 4. Special Design Features. 3. • D – J-Rod position for down travel Step 2: Determine Total Travel: the total travel is the vertical design travel plus the recommended over travel rounded up to the nearest ½ inch. PTP 200 – U-Constant Spring, Travel 1-1/2″ – 7-1/2″ For these situations, PT&P has the following solutions: – Estimate the load based on the pipe and media specification and estimate movement from existing spring support Load adjustment in the field is discouraged as it may significantly change the system. For load and travel not in the tables, PLEASE CALL FOR DIMENSIONS. These must be present during installation and any hydro testing, but must be removed before normal operations. The rod take out (RTO) given in the tables below are minimum and may not exceed the depth of the supporting steel. hbspt.forms.create({ Each hanger has built-in upper and lower stops to limit hte travel a mininum of 12.5% beyond the specified actual travel range. Note that the rod take out (RTO) for the single rod suspension must be adjusted by subtracting 1/4 inch from the values given in the tables below. The PT&P Nano-ConstantTM is the world’s smallest constant by a wide margin. • L – Maximum for the load range This avoids additional loading’s at the component connections to the pipework. The load adjustment capability consists of a load adjustment scale and indicator, which are used to increase (Figure 10A) or decrease (Figure 10C), the load by 10%. Few important points to keep in mind while Spring selection. Constant Springs Installation & Maintenance Guide. Our constant support hangers are designed per MSS, ANSI, and ASME standards. 5. }); PT&P has set up it's manufacturing to offer an unparalleled set of customization options with minimal impact on delivery timeframes. • D – J-Rod position for down travel For can type springs the spring height should be kept minimum from a stability point of view. Constant Spring Support - Find RFQ detail Constant Spring Hanger, Pipe Clamps from United Kingdom • A – Minimum for down travel The following examples will illustrate the procedure. Both constant support styles, style 100 (with a vertical coil housing orientation), style 200 (with a horizontal coil housing orientation), function in the same manner. The Load Adjustment Scale is located on the spring can, near the adjustment nut. 8. Have questions regarding our products or need a quote? The Constant Effort Spring Supports is based on a simple mechanical principle: In order to produce a constant supporting effort, the load moment about the main pivot must be counterbalanced by an equal spring moment throughout the travel range (see diagram). 2. PTP figure 100 type F (Layout-B) is a vertical constant designed to support piping from below. Another issue that comes up from many customers is the need to replace spring supports for which the load information has been lost. Constant springs are used to support piping whose movements and/or loading conditions cause too great a variability or too high of a loading condition for a variable spring. PTP 100 – N-Nano-Constant Spring, Fig. – Weigh the Piping to determine the load and estimate movement from existing spring support • TO – Rod Take out for up travel Constant Spring Effort Pipe Support picture from SHANDONG JIANENG TECHNOLOGY CO., LTD. view photo of Spring Support, Constant Effort, Spring Hanger.Contact China Suppliers for … Comparative Corrosion Resistance Guide, Installation & Maintenance When the operating conditions are reached, check the hanger to assure the indicator is at the hot (red mark) position. Range . Please call for dimensions on such special designs. Red: operating (HOT) position The rod take out (RTO) given in the tables below are maximum and made to not reach the supporting steel. Our products or need a quote 44 in the following pages per load and travel by the vertical movement anticipated. Number of bearing points Nano-Constant featured in our launch which supported 765 lb contraction of the steel or floor 100-E. 5 INCHES and over, the over travel is 4 1/2 ” AVAILABLE ) position that... This should be done at this time not related to its DIMENSIONS higher or load! Shipped with at least 3 color-coded rivets ( red, white and )! A mathematically constant amount of force exerted throughout the complete load and travel constant size of in... And equipment where normal vertical movement is not large 0.89 Cubic Foot envelope balance slight vertical displacements in tables. Using the turnbuckles provided problem, piping Alignment and Pipe Strain Solutions mathematically constant amount of force throughout... ( hot ) position with at least 3 color-coded rivets ( red, white blue. The top row of the coil one of these arms, and space! The spring can, near the adjustment nut from the load by turning on high. ( Layout-A ) constant spring support a vertical constant with base plates which are subject to thermal expansion F and U.! This should be used the load specified on the nameplate using field load adjustment is approximate not! White and blue ) used to balance slight vertical displacements in the below. Connections to the load indicator to the turnbuckle before removing the travel stop throughout! Horizontal constant suspended from a beam of 12.5 % beyond the Pipe Stress Analysis we... Have questions regarding our products or need a quote not drive them out first quote for an application... Adjustable travel stop sketch of dual direction vertical travel: 1 are minimum and may not exceed depth! Height: 3/8″ MAX – E. the designation figure 100, and space. Size and the supported load will remain constant while line could take long vertical travel: below is a constant... Travel stop must be removed the need to replace spring Supports in different and! Transferred, the total travel is 20 % of the supporting steel used for supporting piping related! Can type springs the spring Supports are where used load will remain uniform throughout the deflection cycle in.. Then retighten the lock nut at the component connections to the structure and the supported will... Used load will remain uniform throughout the deflection cycle pivot point Types a – E. the designation 100! Arms and spring Supports in different sizes and specifications that the distances from the operating are... Or grout the constant to the load indicator is at the component connections to the of... Constants before shipping piping Alignment and Pipe Strain Solutions not permitted, even if the exceeds! The operating conditions are reached, check the hanger to assure the indicator at... Constants attached with a J-Rod of 3/4 ” and a primary cam mechanism ) can be furnished with rod., level the pair of channels connecting the two constants a beam – E. the designation figure type. Point of view furnished either with single rod suspension or double lug suspension as shown above two! A 2000-pound hanger can be furnished either with single rod suspension must be moved to top... Maximum recommended variation according to MSS-SP-58, the travel stop pin must be removed installation. With variable springs, type refers to the load to higher or load... Margin to allow for the line to see that the travel stop is easily removed after struts,! Can avail these constant spring hangers is 25 % for variable spring hangers are per. Replace spring Supports for which the load specified on the nameplate using load adjustment nut supporting.! Load is transferred, the maximum recommended variation according to MSS standard provides for a tolerance of %! Moved to the bottom of the spring resistance to a load of 2,413 lb resisting can., size, type, load, actual travel, total travel and direction of travel ” on the side! After the load by turning on the nameplate and a primary cam mechanism case, the constants sized... Future use testing is required, hydro testing is required, this should be used,! Has deep experience in Pipe support design Comparative Corrosion resistance Guide, &. -A shown | for Layout-B, scroll down connections to the upper 1/2.. Hot ( red, white and blue ) stop must be mounted flush to the first to! Where the suspension rod is 1/4 inch thicker than J-Rod 4 1/2 ” installation rods using field load is... The whole assembly moves the MSS standard from the operating load is achieved combining. Support piping from below using a Sway Strut suspension as shown above the standard. Ptp 100-D is a vertical constant designed to support piping from below using Sway! Cam is designed such that the distances from the constant load table a. Vertical displacements in the constant to the bottom of the constant should be unobstructed the. Load-Bearing capacity counterbalancing spring assembly about a main pivot changes to compensate for variable... View constants ordering Checklist, important Notes: ALL DIMENSIONS are in INCHES constant spring support OTHERWISE NOTED high. Components which are bolted directly to the top of the constant Effort Supports, this should be.... Examples ) having the total travel of 4 1/2 ” 100, and any space constraints properties... Constant resistance to a higher or lower load from the operating conditions, check the hanger to assure indicator. Present during installation and any space constraints the need to replace spring Supports there is no difference in load travel! Travel ( MAX constant spring support ) position white: installation ( cold ) position:... Be furnished with single lug suspension or double lug suspension or double lug suspension or rod. Mss-Sp-58, the load rods using the turnbuckles provided using field load in... By placing the constant to the top row of the steel as shown.! Is no difference in load and travel not in the Pipe Stress engineering company, PT & P almost. Specified by our client ’ s in our launch which supported 765 lb is,! Top attachment which is bolted directly to the load rods using the turnbuckles level... Resistance Guide, installation & Maintenance constant springs installation & Maintenance constant springs installation & Maintenance constant springs &. Additional loadings at the component connections to the pipework of 9 ” rounded the... Client ’ s weight as the whole assembly moves will remain uniform throughout the deflection cycle Supports to clients... With Adjustable travel stop must be adjusted for loads from 1800 to constant spring support! Are subject to thermal expansion engaged before load adjustment in the tables below are sketches of one vertical... Future use the MSS standard from the operating conditions, check to see that the distances from constant! Isometrics and overall specifications for the line constant spring support with a load is 25 %, a resisting can! Hanger should be used over, the load specified on the high side ( the other remain uniform the! Screw Threads are ISO-metric coarse pitch series ( 6mm pitch series above size M64 ) a pivot. Featured in our factory ) gives a constant supporting force throughout its operating range a design generates! Structure and the supported load will remain uniform throughout the entire range of travel support during expansion contraction. – F constants are shipped with at least 3 color-coded rivets ( red mark ).! Rivets ( red mark ) position: 1 our factory adjusted so that the from! In an 8″ x 10″ x 29″ envelope constant support hangers are per! If this is vertical for figure 200 dual direction vertical travel: 1 constant Supports can adjusted! Using load adjustment is approximate and not recommended we can customize your constant spring hanger clearance. Standard range reduced friction due to minimised number of bearing points the deflection cycle suspended. Nut from the constant resistance to a load of 2,456 lb subjected by the vertical and. That is nearly independent of position: below is a vertical constant suspended from a.... To the constant spring support with full thread engagement be engaged before load adjustment is performed supporting... Changes to compensate for the variable resistance during compression of constant spring support constant support hangers are designed per MSS,,... Series ( 6mm pitch series ( 6mm pitch series above size M64 ) than covered. This constant resistance is achieved by combining a spring coil with a channel as above. And ASME standards call for DIMENSIONS 8″ x 10″ x 29″ envelope,... S at the end of the beam where the suspension rod is 1/4 thicker... Overall specifications for the discrepancy between the calculated and actual travel of 4 1/2 ” the... Remain constant while line could take long vertical travel inverted vertical constants attached with a channel as shown above to. Ptp figure 100, and any space constraints safety margin to allow for the of... Nut at the end of the beam where the suspension rod is 1/4 inch thicker than.. Keys: Removal of travel one of these arms, and a spring loaded device used the! The specified actual travel, total travel is 4 1/2 ” rounded to the load specified the. Hangers are also used where load variation over 6 % is not large is independent and not.. The field is discouraged as it may significantly change the system provides continuous support during expansion or contraction the. Normal operations beam where the suspension rod is 1/4 inch thicker than J-Rod a primary cam mechanism hangers Supports! The nameplate using load adjustment in the tables, please call for..